Respiratory System Quiz

What is the primary function of the respiratory system?

• To digest food

• To circulate blood

• To move oxygen into the body and remove carbon dioxide

• To produce hormones

What are the tiny hairs inside the nasal cavity called?

• Villi

• Microvilli

• Flagella

• Cilia

Which part of the body is shared by both the respiratory and digestive systems?

• Trachea

• Pharynx

• Larynx

• Bronchi

What is the function of the epiglottis?

• To exchange gases

• To filter air

• To prevent food and water from entering the windpipe

• To produce sound

What is another name for the trachea?

• Esophagus

• Windpipe

• Bronchiole

• Voice box

Where does the gas exchange primarily occur in the lungs?

• Alveoli

• Bronchi

• Nasal cavity

• Trachea

What happens to the diaphragm during inhalation?

• It relaxes and moves upward

• It expands outward

• It contracts and moves downward

• It remains stationary

What is the process of breathing out called?

• Inhalation

• Exhalation

• Respiration

• Aspiration

Which muscles help to expand the chest cavity during inhalation?

• Abdominal muscles

• Intercostal muscles

• Facial muscles

• Pelvic muscles

What is the role of the intercostal muscles during exhalation?

• To produce sound

• To filter air

• To decrease the chest cavity space

• To increase the chest cavity space